If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x^2 = 0
x = 0
x = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
9/x-(176/(x^2))-81-9 = 0
9/x-176*x^-2-81-9 = 0
9*x^-1-176*x^-2-90 = 0
t_1 = x^-1
9*t_1^1-176*t_1^2-90 = 0
9*t_1-176*t_1^2-90 = 0
DELTA = 9^2-(-176*(-90)*4)
DELTA = -63279
DELTA < 0
x belongs to the empty set
| 6a+24=6a-21 | | x^8-5x^7-2x^6= | | X^3+8x-8=0 | | 65=15*x | | -7=25 | | 4/5-3/5x{3/4}-1 | | (x+5)(x+6)=72 | | 6x-9-2x+4=-17 | | 10(x-2)+19=(5x-1)(1-5x) | | (x-6)+(x^2+14)= | | 19X=57/49 | | 3x+8=4-9 | | 5/3X=25/27 | | 15+3=17-t | | 5t-7=t+13 | | ((x-1)/6)-((x-3/2))=-1 | | a(x+1)+5a(x-1)=2(2b-2a) | | (6x^2y-4xy)+(8x^2y-5xy)= | | 63=37x+22 | | 4(2x-3)+5(3x-4)=16 | | 0=x-100+30-20 | | x=sqrt(50u^12v^8) | | sqrt(50u^12v^8)= | | x=.06(149600+x) | | 2x+5-y=12 | | 5/11=x/16 | | -3+2r+7r+4+8r= | | 4x-3/5=6x/7-1 | | (5x^3+2)(x^2-2)= | | y=t^3-14t^2+50t | | 4x5-3=6x/7-1 | | (x+10)(x^2-10x+100)= |